Storage-battery separator and retainer



Nov. 19, I929.

w. B. STONE STORAGE BATTERY SEPARA'QOR AND RETAINER Filed Sept. 16. 1926' Patented Nov. 19, 1929 WALTER B. STONE, or wEEs'rER, mssAcnusErrs s'roRAeEmA'rrERY sEraRA'roR AND RETAINER Application filed September 16, 'iaza Serla1 at. 185,761.

The principal object of the present invention-is to increase the area of the slots of a lattice type or slotted'separator' without diminishing its mechanical strength and at the '5 same time'to retain the active material of a Another object of the invention is to enhance the ability of a slotted separator to retain and revent the passage through it of particles '0 active material. Other objects in retaining the active material of the plates. It is possible in the filling to mix acid roof with nonacid proof substances in or er to vary the ultimate porosity. In a retainer of the type described provided with filling maplate while providing sufiicient porosity for. teria .the passage of the current.

the slots may be considerably wider .than would be advisable in the absence of filling material. In the case of wooden separators the filling tends to, strengthen the structure. As shown in Figs. 2 and 3 the fill- 1o in material is. in the form of threads or of the inventionwill appear from the followstrands which can be readil fed from spools ing descrigtion at the end of which the invention will e, claimed.

and rolled into place and t ey are shown to extend from edge to edge of the retainer. In

In the following description reference will. g 4 and 5 the filling material s not X- be made to the accompanying drawing formin part hereof and in which igure 1 is a perspective view of-a portion of an element equipped with separatorsembodying features of the invention.

Fig. 2 is an elevational view of a part of a retainer and separator embodying features of the invention.

the same, and

' Fig. 3 is a top or plan view of a portion of I claim :I p

1. A storage battery separator and retainer comprising a one-piece face and having slots ranging crosswise of the ribs and clear across the other-face and extending into the ribs and through the portions between them, and porous material fillody ribbed on one Figs. 4 and 5 are views similar to Figs. 2 g the Slotsand 3 and illustrating a modification of the invention.

Referring to the drawing, and more par ticularly to Figs. 2 and 3, the separatorand 2. A storage battery se arator and retainer comprising a one-piece ody ribbed on one face and having s the ribs and clear across tie other face and 1 ots ran g crosswise of retainer is ribbed on one face as at 1, and it extending int? the ribs and through the P has slots ranging crosswise of the ribs andclear across the .other face and extending in into the ribs and through the portions between them. 2 is porous inert material or material adaptedto become inert, and it fills the slots. The slots expose a comparatively large area of the face of the plate or elecdetachment of particles of material from the surfaceof the plate without substantially interfering with the area of the surface of the plate to which the electrolyte has access.

' separator and retainer may-well be made of wood, rubber or other like material and the porous. inert material may well be fibrous, or in the form of filaments, threads or strands or even granular. The object is to secure porosity in the filling material which assists comprisin face and the ribs and clear across t extending into the ribs and through the portions between them, and fibrous strands filltions between them, and fibrous. material fillg the slots.

3. A storage battery se arator and retainer a one-piece ody ribbed on one aving slots ranging crosswise of e other face and ing the slots. W

WALTER. B. STONE. 

